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Mean Well LRS-50-3.3 Power Supply 50W 3.3V
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Mean Well LRS-50-3.3 Power Supply 50W 3.3V
No load power consumption <0.2W for 35W/50W; <0.3W for 75W/100WUniversal AC input / Full rangeWithstand 300VAC surge input for 5 secondsUltra compact and 1U low profileWithstand 5G vibration testHigh operating temperature up to 70oCProtections: Short circuit / Overload / Over voltageCooling by free air convectionCompliance to IEC/EN60335-1(PD3) and IEC/EN61558-1,-2-16 for household appliancesOperating altitude up to 5000 metersHigh efficiency, long life and high reliabilityLED indicator for power onLow cost3 years warranty
Key Features
- ✓85~264VAC; 120~370VDC
- ✓Cold start, 45A at 230VAC
- ✓±10% by potentiometer
- ✓110%~150%
- ✓Type Hiccup mode, auto-recovery
- ✓115%~135% rated output voltage
- ✓Shut down o/p voltage, re-power on to recover
- ✓3.75kVAC, I/P-FG: 2kVAC, O/P-FG: 1.25kVAC, 1 minute
- ✓-30~+70°C (refer to output derating curve)
- ✓UL60950-1, IEC/EN60950-1, IEC/EN61558-1, EN61558-2-16, IEC/EN60335-1, CCC GB4943 approved
- ✓EN55022 class B, EN55014, EN61000-3-2, 3, EN61000-4,2,3,4,5,6,8,11, GB9254
- ✓5P/9.5mm pitch terminal block
- ✓99x 82x 30
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BrandMean Well
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SeriesLRS Series
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Power Rating33 Watt
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Output Voltage3.3 Volt
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Rated Current10 Ampere
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Input Voltage85V~264V
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No of Output1
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Standards MetBSMI,CB,CCC,CE,EAC,RCM,TUV,UL
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Operation ModeConstant Voltage
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Operating Temperature-30°C~70°C
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Warranty3 Year
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Length3.9 in
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Width3.23 in
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Height1.18 in
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Weight0.46 lb
::specification::
Frequently Asked Questions
What loads is the LRS-50-3.3 suitable for at 3.3V?
The LRS-50-3.3 supplies 3.3V at 10A (33W), the standard core logic voltage for FPGAs, microcontrollers, and DDR memory modules. It suits embedded development boards, custom PCBs requiring a 3.3V rail, and low-power logic subsystems within larger equipment.
How does the LRS-50-3.3 output power compare to other LRS-50 models?
The LRS-50-3.3 delivers 33W — the lowest wattage in the LRS-50 family due to the low voltage. By comparison: LRS-50-5 (50W), LRS-50-12 (50.4W), LRS-50-15 (51W), LRS-50-24 (52.8W), LRS-50-36 (52.2W), LRS-50-48 (52.8W). All share the same 99 × 82 × 30 mm case and 0.21 kg weight.
Can the LRS-50-3.3 be used in cold environments?
The LRS-50-3.3 is rated for -30°C to +70°C operation. This low-end cold rating allows deployment in unheated industrial spaces, cold-storage control panels, or outdoor enclosures in temperate climates where temperatures drop near or below freezing.
Is the LRS-50-3.3 appropriate as a standalone board-level power supply for custom electronics?
Yes. At 3.3V and 10A (33W), the LRS-50-3.3 can serve as a primary or auxiliary power supply for custom PCBs requiring a regulated 3.3V rail. Its compact 99 × 82 × 30 mm footprint and 0.21 kg weight allow tight integration inside enclosures.
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Other LRS-50 Models
5 other models| Model | Power | Voltage | Current | IP Rating | Price | |
|---|---|---|---|---|---|---|
| Mean Well LRS-50-15 Power Supply 50W 15V | 51W | 15V | 3.4A | Indoor | $13.59 | View |
| Mean Well LRS-50-5 Power Supply 50W 5V | 50W | 5V | 10A | Indoor | $14.35 | View |
| Mean Well LRS-50-24 Power Supply 50W 24V | 52.8W | 24V | 2.2A | Indoor | $13.00 | View |
| Mean Well LRS-50-48 Power Supply 50W 48V | 52.8W | 48V | 1.1A | Indoor | $13.30 | View |
| Mean Well LRS-50-12 Power Supply 50W 12V | 50.4W | 12V | 4.2A | Indoor | $13.59 | View |
